Electromagnetic waves are waves that can travel through matter or through empty space. ... However, when light travels in matter, it interacts with the atoms and molecules in the material and slows down. As a result, light travels fastest in empty space, and travels slowest in solids.
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Answer:
Electromagnetic waves are waves that can travel through matter or through empty space. ... However, when light travels in matter, it interacts with the atoms and molecules in the material and slows down. As a result, light travels fastest in empty space, and travels slowest in solids.
Explanation:
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